Tayraukham, A. P. D. S., K. Jitkangwan, and W. Rakapang. “Mathematical Literacy Development by Integrated Teaching Method”. Journal of Research and Development Institute Rajabhat Maha Sarakham University, vol. 3, no. 3, Dec. 2016, pp. 11-20, https://so03.tci-thaijo.org/index.php/rdirmu/article/view/211932.